Use of echo shapes in nuclear magnetic resonance log data acquisition and quality control
US10215829B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 2016 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Nov 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method to process information from a wellbore tool is disclosed having steps of placing a wellbore nuclear magnetic resonance tool in a wellbore to a scan a geological formation, activating the nuclear magnetic resonance tool to send signals to and receive signals from the geological formation, acquiring the received signals from the geological formation wherein the received signals have an echo shape, storing the echo shape according to at least one of a quadrature phase and a nominal signal phase, computing an echo shape from all of the received signals, determining a presence of a noise from the received signals, defining a noise filter based upon the received signals from the nuclear magnetic resonance tool and using the filter to remove noise from the received signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.